ExoFusion

What ExoFusion does

ExoFusion is a private fusion technology company founded in 2021 and headquartered in Bellevue, Washington, with a secondary office in Austin, Texas. The company operates as a science innovation, simulation, and intellectual property provider within the magnetic fusion supply chain, serving fusion energy startups, traditional energy companies, government entities, national laboratories (including Princeton Plasma Physics Laboratory), and universities. The stated go-to-market approaches are consulting, design, and licensing, executed via a sales-led B2B motion targeting technical and scientific decision makers.

The company's technology centers on plasma confinement and heat exhaust, with the flagship offering being the proprietary Super-XT Divertor™, which keeps plasma at the plasma-material boundary at very high temperatures (described as solar temperatures) while using novel liquid metal alloys to manage plasma-material interaction challenges. The company claims this architecture can roughly double plasma confinement performance and enable faster, cheaper fusion device development compared with conventional cold-plasma approaches. Beyond the divertor, ExoFusion markets six additional capabilities: confinement optimization, magnetic mirror optimization, stellarator optimization, gyrokinetic turbulence analysis, liquid metal technology R&D (including first walls), and fission-fusion hybrid development. The portfolio is supported by two granted patents on plasma stability and a registered Super-XT Divertor trademark.

ExoFusion's revenue is dominated by U.S. federal grants and research funding from the Department of Energy — including the FIRE program, ARPA-E CHADWICK, INFUSE, and SCIDAC — supplemented by limited seed-stage venture capital (a 2023 round targeting up to $1M) and an exempt securities offering continued in 2024. Pricing is not publicly disclosed and is inferred to be quote-based and individually negotiated. Leadership comprises CEO Romi Mahajan, CSO and co-founder Dr. Mike Kotschenreuther, CTO and co-founder Dr. David Hatch, Chief Scientific Advisor and co-founder Dr. Swadesh Mahajan, and a computational physicist focused on simulation and modeling.

Name

ExoFusion

Legal name

ExoFusion, Inc.

Website

https://exofusion.co

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

1–10 employees

Short description

ExoFusion is a private magnetic fusion technology company providing consulting, design, and licensing around its proprietary Super-XT Divertor and plasma confinement capabilities, serving fusion startups, national labs, governments, universities, and traditional energy firms primarily through U.S. DOE grant funding.

Ownership category

akta.pro rank

Headquarters

HQ city

Bellevue

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

1. Federal Grants and Research Funding: ExoFusion generates revenue primarily through federal grants and research funding from government agencies including DOE, ARPA-E, and other fusion research programs. The company has been awarded funding through programs like CHADWICK, FIRE, INFUSE, and SCIDAC.
2. Seed Round Investment: The company has raised early-stage venture capital funding, including a seed round seeking to raise up to $1 million, with debt securities with minimum investment of $10,000.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

ExoFusion develops proprietary fusion technology and provides science innovation, simulation, and IP services for magnetic confinement fusion devices. Its flagship offering is the Super-XT Divertor™ technology, paired with seven specialized capabilities (confinement optimization, magnetic mirror optimization, stellarator optimization, gyrokinetic turbulence analysis, liquid metals, and fission-fusion hybrid). It serves fusion companies, traditional energy companies, governments, national labs, and universities through consulting, design, and licensing engagements.

Product overview

ExoFusion is a fusion technology company offering a portfolio of specialized capabilities centered around its proprietary Super-XT Divertor™ technology. The company provides seven distinct capabilities including confinement optimization, magnetic mirror optimization, stellarator optimization, gyrokinetic turbulence analysis, liquid metals research, the Super-XT Divertor, and fission-fusion hybrid development. These offerings serve the fusion energy ecosystem by providing science innovation, simulation, and IP services to fusion companies, traditional energy companies, governments, national labs, and universities.

Differentiator

Problem solved

Functional benefit

Products and services

• Super-XT Divertor™ Proprietary divertor technology for toroidal magnetic confinement fusion devices that keeps the plasma at the plasma-material boundary very hot (sun temperature) while using novel liquid metal alloys to handle material erosion challenges, greatly increasing fusion device performance and enabling faster development cycles.
• Confinement Optimization Optimization services for plasma confinement in fusion devices, designed to improve performance and support commercially viable fusion outcomes for fusion developers and researchers.
• Magnetic Mirror Optimization Optimization services for magnetic mirror configuration fusion reactors, applying ExoFusion's simulation and physics expertise to improve performance in this device type.
• Stellarator Optimization Optimization services for stellarator design and performance, including a partnership with Type One Energy focused on maximizing plasma confinement in stellarator devices.
• Gyrokinetic Turbulence Analysis Advanced analysis and modeling services for gyrokinetic turbulence in fusion plasmas to support simulation and design of magnetic confinement fusion devices.
• Liquid Metals Technology Research and development of liquid metal technologies for handling heat exhaust and plasma-material interaction challenges in fusion reactors, including liquid metal walls and first walls.
• Fission-Fusion Hybrid Development Technology development and R&D services for combined fission-fusion hybrid reactor systems.

Quantifiable outcome

• Doubles plasma confinement performance through Super-XT divertor technology
• +1 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Two partnerships are on record, tiered core.

• Princeton Plasma Physics Laboratory (PPPL)coreStrategic or Co-development Partner · 16 September 2025PPPL leads DOE-funded fusion innovation research teams under the FIRE program. ExoFusion is involved in projects led by PPPL, including research into liquid metal walls in fusion generators. The partnership is part of $128 million in DOE funding for FIRE Collaboratives.
• Type One EnergycoreStrategic or Co-development Partner · 1 January 2025Fusion leaders Type One Energy and ExoFusion have extended their partnership on stellarator optimization with a focus on maximizing confinement. This is a strategic partnership for stellarator optimization, demonstrating collaboration between two fusion technology leaders.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Type One Energy: Type One Energy is a private stellarator fusion company (e.g., the Infinity Two reactor) and a named ExoFusion partner for stellarator optimization with a focus on maximizing confinement—directly comparable as a magnetic-confinement fusion device builder and as a shared customer/supplier in the same fusion scientific supply chain.
• Commonwealth Fusion Systems: Commonwealth is the highest-funded private magnetic-confinement fusion company (SPARC tokamak, high-temperature superconductor magnets). ExoFusion explicitly targets tokamak and toroidal fusion builders with confinement and heat-exhaust optimization, making CFS a direct comparable in both customer set and device architecture.
• TAE Technologies: TAE is pursuing field-reversed configuration / magnetic-mirror fusion and represents exactly the kind of device ExoFusion lists under its magnetic-mirror-optimization capability. As a deep-pocket private fusion peer in magnetic confinement, TAE shares ExoFusion's customer-and-competitor overlap.
• Tokamak Energy Ltd: Tokamak Energy is a UK-based spherical tokamak fusion developer using HTS magnets; its ST80-HTS and ST-E1 programs are part of the same magnetic-confinement fusion buyer cohort ExoFusion markets its confinement optimization and divertor services to.
• Helion Energy: Helion is a private fusion company pursuing a pulsed magnetic-confinement / FRC approach with major commercial offtake agreements. While the device physics differs, Helion competes with ExoFusion for fusion-talent and federal-policy attention in the same commercial-fusion ecosystem.
• Zap Energy: Zap Energy develops sheared-flow-stabilized Z-pinch fusion, a magnetic-confinement architecture that addresses plasma stability and confinement challenges similar in problem-space to ExoFusion's gyrokinetic turbulence and confinement optimization work.
• General Fusion: General Fusion pursues magnetized target fusion with steam-piston plasma compression; it sits adjacent to magnetic confinement and shares the same federal/private-fusion funding pool and customer ecosystem that ExoFusion addresses.

Emerging players

• Renaissance Fusion: Renaissance Fusion is a European stellarator/HTS-magnet fusion startup; it is a smaller-scale emerging player in the magnetic-confinement space and a potential additional customer/competitor for stellarator optimization and simulation services.
• Avalanche Energy: Avalanche is an early-stage developer of small modular fusion reactors using a magnetic-confinement approach; it is comparable as an emerging fusion buyer of simulation/IP services and as a fellow hardware-light deeptech team targeting the same federal programs.

Others

• Princeton Plasma Physics Laboratory (PPPL): PPPL is the U.S. DOE national lab leading the FIRE Collaborative teams ExoFusion is part of. It is not a commercial peer but is the most relevant institutional counterparty—from a sourcing, talent, and funding-flow perspective—shaping ExoFusion's scientific validation and grant pipeline.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/exofusion

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds3 records

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ExoFusion